Journal of Jilin University(Earth Science Edition) ›› 2018, Vol. 48 ›› Issue (5): 1546-1555.doi: 10.13278/j.cnki.jjuese.20180179

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Deformation Characteristics and Stability Analysis of Deposit Slope After Initial Impoundment

Tang Junfeng1, Tang Xuemei2, Zeng Xiangnong3, Yang Jun1, Li Xuezheng1   

  1. 1. PowerChina Zhongnan Engineering Corporation Limited, Changsha 410014, China;
    2. Hunan Vocational Institute of Safety & Technology, Changsha 410151, China;
    3. Changsha Environmental Protection College, Changsha 410004, China
  • Received:2018-07-04 Online:2018-09-26 Published:2018-11-20
  • Supported by:
    Supported by National Natural Science Foundation of China (51078151)

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Abstract: A geological disaster induced by reservoir impoundment is common. It is important to study the characteristics and stability of deposit slope at reservoir bank before and after impoundment for prevention of such a disaster. Based on the in-situ detailed engineering geological investigation and monitoring materials, the structural and deformation characteristics of deposit slope were analyzed, and the formation and deformation mechanisms were discussed in this study. Finally, based on the discrete element method, the stability of this slope was evaluated. Based on the above research results, the deposit slope was formed from the ancient slide, and the reservoir water level raised by nearly 40m in two months, thus activating the ancient landslides and resulting in the deformation. The engineering treatment such as drainage tunnels and drainage holes slow down the deformation of the slope dramatically, and the deformation of some observation points has a convergence trend.

Key words: deposit slope, deformation character, deformation mechanism, stability

CLC Number: 

  • TU45
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